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Troubleshooting 5 Wire Functions for 7-Way Trailer Connector


reconnecting 5 wire lead from trailer to 7 way RV connector I have 5 wire leads from trailer: green, brown, yellow, black, white connector has 6 terminals: green, brown. black, white, red, blue. To which leads do I connect the yellow wire...the red or the blue terminal? Connector got pulled of accidentally so dont know how it was previously wired but worked perfectly.


Expert Reply:

The Mighty Cord 7-Way RV Style Trailer Connector - Trailer End # A10-7081VP you asked from will have the function locations that will match the attached photo. Don't let their color coding throw you as you will need to wire based on functions and pin locations.

Here is how to determine which wire goes can simply use a battery and some wires to test functions with the 12V power for testing each light function and the negative battery terminal connected to ground on your trailer frame. I've attached the photo and linked a trailer wiring article to help.

click to enlarge
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